PERFORMANCE OF LOCAL AND MODERN T. AMAN VARIETIES UNDER DROUGHT STRESS CONDITION

Abstract

ABSTRACT An experiment was conducted at the Sher-e-Bangla Agricultural University during the period from aman season (June-December 2014) with a view to study the performance of local and modern T. aman varieties under drought stress condition. The experiment comprised of 16 varieties, 12 local and 4 modern varieties viz. (i) Kartik Shail, (ii) Doodh Kalam, (iii) Nakhuchi Mota, (iv) Kartik Balam, (v) Lal Mota, (vi) Kalo Khaia, (vii) Changshai, (viii) Basmati Shakkar Khanna, (ix) Dholi Chikon, (x) Rani Salute, (xi) Ghashful Chikon, (xii) Moulata, (xiii) BRRI dhan34, (xiv) BRRI dhan33, (xv) BRRI dhan62 and (xvi) BU dhan1. The experiment was laid out in a RCBD design in field (non-stressed condition) and in pot (stressed condition), each with three replications. In stressed condition, at the time of harvest, the longest plant (139.50 cm) was found in Kartik Balam and Basmati Shakkar Khanna; highest number of total tillers hill -1 (20.33) and longest panicle (28.533 cm) were found in Lal Mota and Basmati Shakkar Khanna, respectively; highest number of total grains panicle -1 (163.33) and filled grains panicle -1 (135.33) were recorded in BRRI Dhan 34. However, the highest weight of 1000-grains (29.60 g), grain yield (4.92 t ha ), straw yield (20.98 t ha -1 ) and biological yield (21.90t ha -1 ) were found in Moulata. In nonstressed condition, at the time of harvest, the longest plant (184.83 cm) was found in

Kalo Khaia; highest number of total tillers hill -1 (17.67) was found in BU Dhan 1. The longest panicle (31.50 cm), highest number of total grains panicle -1 (300.00) and filled grains panicle -1 (255.67) were recorded in Basmati Shakkar Khanna; highest weight of 1000-grains (32.07 g) was found in Rani Salute. The highest grain yield (12.35 t ha ) was recorded in BRRI dhan62; highest straw yield (20.98 t ha -1 ) and biological yield (30.87 t ha -1 ) were found in Moulata and Doodh Kalam, respectively. In the case of days to maturity, both in stressed and non-stressed condition, most of the local varieties mature at the same time or slightly late compared to the modern varieties. Local varieties especially Moulata could be recommended for further trials in multi locations for T. aman cultivation in stressed region. -1 -1